diff options
| -rw-r--r-- | drivers/serial/serial_core.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/serial/serial_core.c b/drivers/serial/serial_core.c index 3bb5d241dd4..0cf382b55d4 100644 --- a/drivers/serial/serial_core.c +++ b/drivers/serial/serial_core.c @@ -2150,10 +2150,11 @@ uart_configure_port(struct uart_driver *drv, struct uart_state *state, /* * Ensure that the modem control lines are de-activated. + * keep the DTR setting that is set in uart_set_options() * We probably don't need a spinlock around this, but */ spin_lock_irqsave(&port->lock, flags); - port->ops->set_mctrl(port, 0); + port->ops->set_mctrl(port, port->mctrl & TIOCM_DTR); spin_unlock_irqrestore(&port->lock, flags); /* |